01662954

Component

This study was undertaken to locally calibrate the models in the AASHTOWare Pavement ME Design software and to compare the pavement designs done using the AASHTO 1993 and AASHTOWare Pavement ME Design software for jointed plain concrete pavement (JPCP) sections. Twenty-two newly constructed JPCP projects were selected to calibrate rigid pavement models; 17 of those projects were selected for calibration and five for validation. The traditional split sampling method was followed in calibration. Mechanistic-Empirical Pavement Design Guide (MEPDG)-predicted distresses of road segments were compared with the measured ones. Statistical analysis was performed using the Microsoft Excel statistical toolbox. The JPCP transverse joint faulting model was calibrated using sensitivity analysis and iterative runs of AASHTOWare to determine optimal coefficients that minimized bias. The International Roughness Index (IRI) model was calibrated using the generalized reduced gradient nonlinear optimization technique in Microsoft Excel Solver. The transverse slab cracking model could not be calibrated due to lack of measured cracking data. Eleven prospective and two in-service JPCP sections with varying design traffic levels were reanalyzed using both design methods. The results show that the 1993 AASHTO design guide yielded higher slab thickness than the AASHTOWare Pavement ME Design software for the projects with high traffic level. However, thinner slab thicknesses were obtained by the 1993 Design Guide for the projects with medium and low traffic.

This paper was sponsored by TRB committee AFD50 Standing Committee on Design and Rehabilitation of Concrete Pavements.

18-05022

English

5p

2018

Transportation Research Board 97th Annual Meeting

Digital/other

Figures; Tables

Calibration; Concrete pavements; Design methods; Statistical analysis

AASHTO Design Guide; AASHTOWare (Software); International Roughness Index; Mechanistic-Empirical Pavement Design Guide

Comparative analysis; Jointed plain concrete pavements

Design; Highways; Pavements

Transportation Research Board Annual Meeting 2018 Paper #18-05022

TRIS, TRB, ATRI

Jan 8 2018 11:15AM